Finding the Fourth Proportional to 11,310.24, 16,969.47 and 3,915.45

Step by Step Solution

1. Step 1: Write the proportion equation
   11,310.24 : 16,969.47 = 3,915.45 : x
2. Step 2: Convert to fraction form
   11,310.24/16,969.47 = 3,915.45/x
3. Step 3: Cross multiply
   11,310.24x = 16,969.47 × 3,915.45
4. Step 4: Simplify right side
   11,310.24x = 66,443,111.31
5. Step 5: Solve for x
   x = 66,443,111.31/11,310.24
6. Step 6: Final answer
   x = 5,874.60